Method for preparing alkoxy compound by oxyalkylation

A technology of alkoxy compounds and alkoxylation, which is applied in the preparation of amino compounds from amines, the preparation of organic compounds, and the preparation of ethers from alkylene oxides, etc. It can solve the problems of affecting product performance, turbid appearance, and poor compatibility. question

Inactive Publication Date: 2005-10-12
SINOPEC SHANGHAI PETROCHEMICAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing alkoxylation catalysts capable of preparing narrowly distributed alkoxylates have a common disadvantage of poor compatibility with alkoxylates, resulting in cloudy product appearance
In addition, the chemical properties of these catalysts are quite different from those of alkoxy compounds, which also affects the performance of the product to some extent.

Method used

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  • Method for preparing alkoxy compound by oxyalkylation
  • Method for preparing alkoxy compound by oxyalkylation
  • Method for preparing alkoxy compound by oxyalkylation

Examples

Experimental program
Comparison scheme
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Embodiment 1～8

[0024] Add 200g of alcohol ether carboxylic acid into the flask, add 100g of water and 100g of isopropanol, stir and heat to 90°C, then add an equivalent mole of calcium oxide or magnesium oxide powder (calculated from the acid value of alcohol ether carboxylic acid) Gradually add it to the flask, and after fully reacting, remove the water and solvent by rectification to obtain the catalyst.

[0025] 600g C 12 ~C 14 Add mixed alcohol and 20g of catalyst into a 2-liter high-pressure reactor, replace with nitrogen to remove oxygen, raise the temperature to 100-120°C, vacuumize for 0.5-1 hour, then raise the temperature to 170°C, and feed 30g of ethylene oxide Carry out initiation reaction, add the ethylene oxide (required equivalent of reaction) that total amount is 380g continuously in the reactor after initiation reaction, keep system pressure at 0.2~0.4MPa during the addition process. After the reaction is completed, it is aged for 20 minutes, cooled to about 110°C and vacu...

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Abstract

The method for preparing alkoxyl compound by utilizing alkoxylation reaction in the presence of catalyst is characterized by that it uses the compound containing reactive hydrogen and epoxy ethane as raw material, its reaction temp. is 100-220 deg.C, reaction pressure is 0.1-0.6 MPa, its catalyst has the following structure: [RO(CH2Ch2O)nCH2COO]2-M, in which R is alkyl group or alkenyl group of C2-C30, n=1-16, M is Ca or Mg. The dose of catalyst is the weight ratio of compound containing reactive hydrogen and catalyst which is equal to 100:0.3-8.

Description

technical field [0001] The present invention relates to a process for the preparation of alkoxylates by alkoxylation. Background technique [0002] Alkoxylates are an important class of compounds, such as alkoxylates of alcohols, alkoxylates of carboxylic acids, alkoxylates of amines, etc. Most of the alkoxylates can be used as nonionic surfactants, which are widely used in washing, textile printing and dyeing, pesticides, industrial cleaning and other industries. In addition, it can also be used as an intermediate to prepare various other anionic surfactants through sulfonation, phosphorylation, etc. Alkoxy compounds can usually be prepared by addition reaction of compounds containing active hydrogen and ethylene oxide in the presence of catalysts, and the products are mixtures with different degrees of polymerization. At present, the commonly used catalysts in industry are basic catalysts, such as KOH, NaOH and sodium methoxide. The alkoxylation reaction with a strong b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07B41/04C07C41/02C07C51/367C07C209/68C08G65/02
Inventor 张少钢王忠凯范进
Owner SINOPEC SHANGHAI PETROCHEMICAL CO LTD
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